3:4 And Nadab and Abihu died {b} before the LORD, when they offered strange fire before the LORD, in the wilderness of Sinai, and they had no children: and Eleazar and Ithamar ministered in the priest's office in the {c} sight of Aaron their father.
(b) Or, before the altar.
(c) While their father lived.
3:4 In the sight of Aaron - Under his inspection and direction, and as their father's servants or ministers in the priest's office.
3:1-13 There was much work belonging to the priests' office, and there were now only Aaron and his two sons to do it; God appoints the Levites to attend them. Those whom God finds work for, he will find help for. The Levites were taken instead of the first-born. When He that made us, saves us, as the first-born of Israel were saved, we are laid under further obligations to serve him faithfully. God's right to us by redemption, confirms the right he has to us by creation.